questionText: To ask the Secretary of State for Transport, pursuant to the Answer on 16 October 2023 to Question 199996 on Motorways: Speed Limits, on what (a) basis and (b) authority National Highways conducted a trial without scientific advice to support a trial bein
answerText: National Highways have a legal duty to achieve compliance of NO2 levels on their roads in the shortest possible time. Part of this duty was to review new technology and research. The speed trial was one of these pieces of research undertaken by experts fr...
heading: Motorways: Speed Limits